Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/remix-run/react-router/prepare-release-notesnpx skills add remix-run/react-router --skill prepare-release-notesgit clone --depth 1 https://github.com/remix-run/react-routerWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00086 | $0.00959 |
| Opus 5 | $0.00043 | $0.00479 |
| Sonnet 5 | $0.00017 | $0.00192 |
| Haiku 4.5 | $0.00009 | $0.00096 |
Grade A, and why
prepare-release-notes scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 99 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Prepare Release Notes
Polish pending React Router change files and add manual release notes only when the release needs narrative context beyond the generated change lists.
Workflow
- Inspect local state:
git status --short
find packages -path '*/.changes/*.md' -not -name README.md -not -name .gitkeep -print | sort
-
Read every pending change file. Do not edit generated changelogs or released notes directly.
-
Normalize each change file:
- Remove
feat:,feat(...),fix:, andfix(...)semantic-commit prefixes from prose - Use present or imperative tense for the first line and top-level release bullets: prefer
Add,Fix,Remove,Support,Stabilize,Preserve,Update,Avoid,Prevent,Throw,Warn,Expose - Nested detail bullets can stay explanatory when they expand on the parent bullet; do not rewrite them solely to force present or imperative tense
- Remove terminal sentence periods from bullet items because release generation appends PR/commit links after the first bullet line
- Remove terminal sentence periods from nested bullet items too, unless the punctuation is part of code, a URL, an abbreviation, a version number, or another token where removing it would be wrong
- If one bullet contains multiple sentences, split it into a shorter parent bullet plus nested bullet items
- Keep the first line concise and user-facing; use nested bullets for details or migration notes
- Remove
-
Review whether
scripts/changes/whats-changed.mdis needed:- Read
CHANGELOG.mdexamples orreferences/whats-changed.mdwhen uncertain - Add
scripts/changes/whats-changed.mdonly for features, future flag stabilizations, unstable flags, migration guidance, breaking bug fixes, or complex behavior that needs long-form text or examples - Do not add it for ordinary bug fixes, dependency cleanup, internal refactors, or release bullets that are already clear
- If adding it, write the body only; the release script adds
### What's Changedwhen missing
- Read
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 99 lines · 86 tokens per session scan A c2476870304a
prepare-release-notes is a skill published in the GitHub repository remix-run/react-router (56,575 stars, last pushed 3d ago), licensed MIT. It adds 86 tokens to every session and 959 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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